How to choose a LiPo battery for an RC aircraft
Cell count, capacity, C rating, connectors, battery weight and realistic flight time explained for RC aircraft buyers.
7.6V 4100mAh 2S 120C Smart Pro Race Shorty Hardcase LiHV Battery: Tubes, 5mm is a Spektrum product intended for surface RC vehicles, crawlers, bashers and race setups that need dependable Spektrum control electronics. This page presents the practical buying information a customer needs before ordering: fit, SKU, image, category, specifications and usage advantages.
The content is written for purchasing through RC-MODEL, without supplier prices or links to competing stores.
These guides explain the setup, safety checks and accessory choices that usually matter for this product type.
Cell count, capacity, C rating, connectors, battery weight and realistic flight time explained for RC aircraft buyers.
Charging, storage, discharge, swelling, safe charging bags and the mistakes that should never be made with LiPo packs.
A buying guide that helps customers choose battery cell count, capacity, C rating, connector and charger direction by model type.
Storage habits for expensive RC equipment: aircraft support, humidity, dust, battery storage voltage, connectors and long-term readiness.
A step-by-step safety guide for measuring amps, watts and voltage sag so customers avoid overheating motors, ESCs and LiPo batteries.
| Technical Specifications | |
| Manufacturer | Spektrum |
| Brand | Spektrum |
| Product Code | SPMX412S120HT |
| Spektrum Category | Cars & Trucks / Parts, Electronics & Accessories / Batteries |
| Connector Type | 5mm Bullet |
| Product Family | Spektrum Smart battery range |
| Application | Surface / Racing |
| Compatibility Focus | Check compatibility with Spektrum Smart equipment and the exact model requirements before ordering. |
| Battery Type | LiHV (3.8V per cell) |
| Battery Voltage | 7.6V |
| Number of Cells | 2 |
| Product Height | 0.76" (19 mm) |
| Product Length | 3.66" (93 mm) |
| Product Weight | 5.46 oz (155 g) |
| Product Width | 1.85" (47 mm) |
| Programmable | Yes |
| Technology | Smart |
| Battery Balance Connector | Pro Race Series 2-Pin Balance Connector |
| Hard Case | Yes |
| Maximum Charge Rate | 5C |
| Maximum Continuous Discharge Rate | 492A |
| Watt Hours | 31.16Wh |
| Capacity | 4100mAh |
| Charge Protection Circuitry | Yes |
| Normal/Standard Charge Current | 1C |
| Normal/Standard Charge Rate | 4.1A |
| Prop 65 | California Residents Prop 65 WARNINGS. |
| Maximum Charge Current | 20.5A |
| Maximum Continuous Discharge Current | 120C |
| Software Updates | Yes |
| Part Type | Electronics |
Tags: Spektrum, SPMX412S120HT, Spektrum Smart battery range, Spektrum Catalog, Spektrum Smart Technology, Spektrum Batteries, Spektrum Smart Batteries, Spektrum Surface Electronics, RC-MODEL
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